Air tank



FIG. 1 is a top plan view of an air tank.

FIG. 2 is a bottom plan view of the air tank of FIG. 1.

FIG. 3 is a first end elevation view of the air tank of FIG. 1.

FIG. 4 is a second end elevation view of the air tank of FIG. 1.

FIG. 5 is a first side elevation view of the air tank of FIG. 1.

FIG. 6 is a second side elevation view of the air tank of FIG. 1.

FIG. 7 is an isometric view of the air tank of FIG. 1.

FIG. 8 is another isometric view of the air tank of FIG. 1; and,

FIG. 9 is a perspective view of an air tank shown in use on a motorcycle.

The broken and dash-dot-dash boundary lines shown illustrate portions of the air tank and environment that form no part of the claimed design. 

CLAIM The ornamental design for an air tank, as shown and described. 